Comments moved to https://news.ycombinator.com/item?id=25706993. I didn't see anything here specific to AWS (edit: except the one specifically-on-topic comment that appears just as I posted this. Sorry zmmmmm.)
I'm much more ambivalent about AWS than the others. I think there is a real distinction between the app platforms and lower level infrastructure. It's both much broader type of impact and also more distant from responsibility for the speech being exercised.